IF you don’t have SharePoint 2010 Management Shell installed on your server – AND assuming SharePoint is installed on your server, you can add the snap-in for SharePoint into Windows Powershell to be able to use the SharePoint cmdlets.

All you need to do is to type in the following in Windows PowerShell:
Add-PSSnapin Microsoft.SharePoint.Powershell

Then, press ENTER

Remember to run it as Administrator.